如何测试自定义视图的性能 [英] How to test the Custom view performance

问题描述

我想测试我的自定义组件UI渲染性能.我使用以下测试用例来检查渲染性能.

I want to test my Custom component UI rendering performance. I used the following test case to check the rendering performance.

private long getLayoutTime(int layoutRes) {
        final Context targetContext = getInstrumentation().getTargetContext();
        final LayoutInflater layoutInflater = LayoutInflater.from(targetContext);

        final long startTime = System.currentTimeMillis();
        for (int i = 0; i < 1000; i++) {
            final View view = layoutInflater.inflate(layoutRes, null);
            view.setLayoutParams(new ViewGroup.LayoutParams(0, 0));

            view.measure(View.MeasureSpec.makeMeasureSpec(1000, View.MeasureSpec.EXACTLY), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
            final int measuredHeight = view.getMeasuredHeight();
            final int measuredWidth = view.getMeasuredWidth();

            view.layout(0, 0, measuredWidth, measuredHeight);
        }
        return System.currentTimeMillis() - startTime;
    }

使用此代码，我可以测试布局渲染时序.这样我更改了布局设计以获得更好的性能.现在，我正在创建一个具有多个布局和组件(如图像，文本视图等)的Custom视图类.我将在运行时附加该类，并且组件将在运行时根据服务器的响应进行创建.我不会在XML中附加此自定义组件.现在，我要测试此自定义视图的渲染性能.请向我建议使用任何工具或任何方式来计算自定义视图的UI呈现时间.

Using of this code I can test the layout render timing. So that I changed the layout design for better performance. Now I am creating a Custom view class with multiple layouts and components like images, textviews and etc. I will attach the class at run time and components will create on the run time based on the server response. I will not attach this custom component in XML. Now I want to test the rendering performance of this custom view. Please suggest me any tools or any way to calculate the UI rendering time for the custom view.

推荐答案

嗯，有很多方法可以做到这一点:

Well, there are many ways to do this:

1. 您可以在此处
查看系统跟踪文档.
2. 您应该查看 Jetpack基准测试库

1. You may check the system tracing documentation here
2. You should check out the Jetpack Benchmarking Library

如果您只想要与您正在做的事情类似的东西，那么我想这就是您正在寻找的东西(只需创建一个CustomView对象而不是夸大XML布局即可):

If you just want something similar to what you are doing, then i guess this is what you are looking for (just create a CustomView object instead of inflating an XML layout) :

private long getLayoutTime() {
    final Context targetContext = getInstrumentation().getTargetContext();

    final long startTime = System.currentTimeMillis();
    for (int i = 0; i < 1000; i++) {
        final View view = CustomView(targetContext)
        view.setLayoutParams(new ViewGroup.LayoutParams(0, 0));

        view.measure(View.MeasureSpec.makeMeasureSpec(1000, View.MeasureSpec.EXACTLY), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
        final int measuredHeight = view.getMeasuredHeight();
        final int measuredWidth = view.getMeasuredWidth();

        view.layout(0, 0, measuredWidth, measuredHeight);
    }
    return System.currentTimeMillis() - startTime;
}

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